ACR is a Web CMS library that can be embedded inside any Turbogears 2 application to add CMS functions. It provides all the fundamental tools to allow an individual or a community to easily publish and manage a Web site with different content types, from Twitter streams to video galleries. It also provides an easy-to-use set of APIs to create new content types by defining your Views. ACR also comes with ACR_cms, a CMS implemented by using libACR.

AIIXtensions is a collection of advanced extensions that makes things simple and efficient by utilizing the "Just Do It" principle. SQL Query: displays a database query result in a module position. DOM Master: manipulates a page DOM.

ARENACM is an advanced content management system with many modules and extensions. It is currently only available in Norwegian. It is professionally supported and developed in conjunction with professional designers to ensure that it looks as good as it works.

AldoContent is a lightweight CMS focused on
usability and simplicity.
It is designed for multilingual Web sites and can
have sections with
public and private content. It has file
management, is extensible with
plugins, and uses gettext for localization. Is
written in PHP for a
MySQL backend.

Alkaline is a PHP content management system (CMS) for creative professionals and small businesses that is designed to be used alone or in conjunction with your own proprietary code. The application handles posts as well as images, and can manage both raster (GIF, JPEG, and PNG) and vector graphics (PDF, SVG). The software features customizable themes, extensions, and more. It can be used by novices (for example, drag-and-drop social network integration) and advanced users (for example, overriding the theme engine). It works with most Web server software, including Apache and Windows Server.

AlphaLemon CMS is a content management system built on top of the Symfony2 framework. It is designed to make it as easy as possibile to manage a Web site without requiring programming or a large learning curve, while giving developers a robust and flexible framework on which to build Web applications and distributable extensions.

Ametys is a powerful Web CMS used by many institutions of higher education and government, but also industries and SMEs. It is known for its ergonomic design which promotes ease of use, its social Web functionality, and the ability to manage a large number of users. It makes content publishing accessible for the non-programmer and provides an easy editorial interface very similar to Microsoft Office applications.

Antville is high performance, feature rich weblog hosting software based on Helma Object Publisher, an Open Source Web application server entirely written in Java. Antville itself is written in JavaScript and scales very well up to tens of thousands of weblogs on an ordinary machine. It is easy to use while offering a lot of advanced features which make it capable of hosting other types of websites as well. It features per-site language and timezone definitions, import and export of layout templates, import and export of stories (.xml), tags, polls, file uploads, user rights management, Blogger, MetaWeblog, and MovableType API support, virtual site hosting, feeds (full content or just stories, comments, per tag), and disk quotas. The AntClick package contains everything you need to run Antville on your own computer (Web server, application server, embedded database). It is already configured; just unpack the file, and you're done.

AutoCMS is a smaller CMS with the minimum needed to have a presence on the Internet. Its main file is less than 10kb large by default. No database is required. It only has the concept of one user (the admin). The password is protected with SHA1. CSS styles are easy to build and to change. Changing a page is very fast. XHTML and CSS code are validated by W3C validators. Data is stored in a PHP file which can be downloaded by FTP for backups. The generated contents are friendly for searchers. The result is visualized correctly in all browsers. It allows you to update all contents without having knowledge of programming.